164487892 has 6 divisors (see below), whose sum is σ = 287853818. Its totient is φ = 82243944.

The previous prime is 164487887. The next prime is 164487899. The reversal of 164487892 is 298784461.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 146797456 + 17690436 = 12116^2 + 4206^2 .

It is a super-2 number, since 2×164487892² = 54112533229207328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164487899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20560983 + ... + 20560990.

Almost surely, 2^164487892 is an apocalyptic number.

It is an amenable number.

164487892 is a deficient number, since it is larger than the sum of its proper divisors (123365926).

164487892 is a wasteful number, since it uses less digits than its factorization.

164487892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41121977 (or 41121975 counting only the distinct ones).

The product of its digits is 774144, while the sum is 49.

The square root of 164487892 is about 12825.2833107109. The cubic root of 164487892 is about 547.9126301472.

The spelling of 164487892 in words is "one hundred sixty-four million, four hundred eighty-seven thousand, eight hundred ninety-two".